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			1137 lines
		
	
	
		
			42 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
		
		
			
		
	
	
			1137 lines
		
	
	
		
			42 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
|   | <?php | ||
|  | // +----------------------------------------------------------------------+
 | ||
|  | // | PHP versions 4 and 5                                                 |
 | ||
|  | // +----------------------------------------------------------------------+
 | ||
|  | // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox,                 |
 | ||
|  | // | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton                       |
 | ||
|  | // | All rights reserved.                                                 |
 | ||
|  | // +----------------------------------------------------------------------+
 | ||
|  | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
 | ||
|  | // | API as well as database abstraction for PHP applications.            |
 | ||
|  | // | This LICENSE is in the BSD license style.                            |
 | ||
|  | // |                                                                      |
 | ||
|  | // | Redistribution and use in source and binary forms, with or without   |
 | ||
|  | // | modification, are permitted provided that the following conditions   |
 | ||
|  | // | are met:                                                             |
 | ||
|  | // |                                                                      |
 | ||
|  | // | Redistributions of source code must retain the above copyright       |
 | ||
|  | // | notice, this list of conditions and the following disclaimer.        |
 | ||
|  | // |                                                                      |
 | ||
|  | // | Redistributions in binary form must reproduce the above copyright    |
 | ||
|  | // | notice, this list of conditions and the following disclaimer in the  |
 | ||
|  | // | documentation and/or other materials provided with the distribution. |
 | ||
|  | // |                                                                      |
 | ||
|  | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
 | ||
|  | // | Lukas Smith nor the names of his contributors may be used to endorse |
 | ||
|  | // | or promote products derived from this software without specific prior|
 | ||
|  | // | written permission.                                                  |
 | ||
|  | // |                                                                      |
 | ||
|  | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
 | ||
|  | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
 | ||
|  | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
 | ||
|  | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
 | ||
|  | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
 | ||
|  | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
 | ||
|  | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
 | ||
|  | // |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
 | ||
|  | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
 | ||
|  | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
 | ||
|  | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
 | ||
|  | // | POSSIBILITY OF SUCH DAMAGE.                                          |
 | ||
|  | // +----------------------------------------------------------------------+
 | ||
|  | // | Author: Lorenzo Alberton <l.alberton@quipo.it>                       |
 | ||
|  | // +----------------------------------------------------------------------+
 | ||
|  | //
 | ||
|  | // $Id$
 | ||
|  | 
 | ||
|  | require_once 'MDB2/Driver/Manager/Common.php'; | ||
|  | 
 | ||
|  | /** | ||
|  |  * MDB2 FireBird/InterBase driver for the management modules | ||
|  |  * | ||
|  |  * @package MDB2 | ||
|  |  * @category Database | ||
|  |  * @author Lorenzo Alberton <l.alberton@quipo.it> | ||
|  |  */ | ||
|  | class MDB2_Driver_Manager_ibase extends MDB2_Driver_Manager_Common | ||
|  | { | ||
|  |     // {{{ createDatabase()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * create a new database | ||
|  |      * | ||
|  |      * @param string $name    name of the database that should be created | ||
|  |      * @param array  $options array with charset info | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function createDatabase($name, $options = array()) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'Create database', | ||
|  |                 'PHP Interbase API does not support direct queries. You have to '. | ||
|  |                 'create the db manually by using isql command or a similar program', __FUNCTION__); | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ dropDatabase()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * drop an existing database | ||
|  |      * | ||
|  |      * @param string $name  name of the database that should be dropped | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function dropDatabase($name) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'Drop database', | ||
|  |                 'PHP Interbase API does not support direct queries. You have '. | ||
|  |                 'to drop the db manually by using isql command or a similar program', __FUNCTION__); | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ _silentCommit()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * conditional COMMIT query to make changes permanent, when auto | ||
|  |      * @access private | ||
|  |      */ | ||
|  |     function _silentCommit() | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         if (!$db->in_transaction) { | ||
|  |             @$db->exec('COMMIT'); | ||
|  |         } | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ _makeAutoincrement()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * add an autoincrement sequence + trigger | ||
|  |      * | ||
|  |      * @param string $name  name of the PK field | ||
|  |      * @param string $table name of the table | ||
|  |      * @param string $start start value for the sequence | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access private | ||
|  |      */ | ||
|  |     function _makeAutoincrement($name, $table, $start = null) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $table_quoted = $db->quoteIdentifier($table, true); | ||
|  |         if (null === $start) { | ||
|  |             $db->beginTransaction(); | ||
|  |             $query = 'SELECT MAX(' . $db->quoteIdentifier($name, true) . ') FROM ' . $table_quoted; | ||
|  |             $start = $this->db->queryOne($query, 'integer'); | ||
|  |             if (MDB2::isError($start)) { | ||
|  |                 return $start; | ||
|  |             } | ||
|  |             ++$start; | ||
|  |             $result = $db->manager->createSequence($table, $start); | ||
|  |             $db->commit(); | ||
|  |         } else { | ||
|  |             $result = $db->manager->createSequence($table, $start); | ||
|  |         } | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $db->raiseError(null, null, null, | ||
|  |                 'sequence for autoincrement PK could not be created', __FUNCTION__); | ||
|  |         } | ||
|  | 
 | ||
|  |         $sequence_name = $db->getSequenceName($table); | ||
|  |         $trigger_name  = $db->quoteIdentifier($table . '_AI_PK', true); | ||
|  |         $name  = $db->quoteIdentifier($name, true); | ||
|  |         $trigger_sql = 'CREATE TRIGGER ' . $trigger_name . ' FOR ' . $table_quoted . ' | ||
|  |                         ACTIVE BEFORE INSERT POSITION 0 | ||
|  |                         AS | ||
|  |                         BEGIN | ||
|  |                         IF (NEW.' . $name . ' IS NULL OR NEW.' . $name . ' = 0) THEN | ||
|  |                             NEW.' . $name . ' = GEN_ID('.$sequence_name.', 1); | ||
|  |                         END'; | ||
|  |         $result = $db->exec($trigger_sql); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $this->_silentCommit(); | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ _dropAutoincrement()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * drop an existing autoincrement sequence + trigger | ||
|  |      * | ||
|  |      * @param string $table name of the table | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access private | ||
|  |      */ | ||
|  |     function _dropAutoincrement($table) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $result = $db->manager->dropSequence($table); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $db->raiseError(null, null, null, | ||
|  |                 'sequence for autoincrement PK could not be dropped', __FUNCTION__); | ||
|  |         } | ||
|  |         //remove autoincrement trigger associated with the table
 | ||
|  |         $table = $db->quote(strtoupper($table), 'text'); | ||
|  |         $trigger_name = $db->quote(strtoupper($table) . '_AI_PK', 'text'); | ||
|  |         $trigger_name_old = $db->quote(strtoupper($table) . '_AUTOINCREMENT_PK', 'text'); | ||
|  |         $query = "DELETE FROM RDB\$TRIGGERS
 | ||
|  |                    WHERE UPPER(RDB\$RELATION_NAME)=$table | ||
|  |                      AND (UPPER(RDB\$TRIGGER_NAME)=$trigger_name | ||
|  |                       OR UPPER(RDB\$TRIGGER_NAME)=$trigger_name_old)";
 | ||
|  |         $result = $db->exec($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $db->raiseError(null, null, null, | ||
|  |                 'trigger for autoincrement PK could not be dropped', __FUNCTION__); | ||
|  |         } | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ createTable()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * create a new table | ||
|  |      * | ||
|  |      * @param string $name    Name of the database that should be created | ||
|  |      * @param array  $fields  Associative array that contains the definition of each field of the new table | ||
|  |      *                        The indexes of the array entries are the names of the fields of the table an | ||
|  |      *                        the array entry values are associative arrays like those that are meant to be | ||
|  |      *                        passed with the field definitions to get[Type]Declaration() functions. | ||
|  |      * | ||
|  |      *                        Example | ||
|  |      *                        array( | ||
|  |      *                            'id' => array( | ||
|  |      *                                'type' => 'integer', | ||
|  |      *                                'unsigned' => 1, | ||
|  |      *                                'notnull' => 1, | ||
|  |      *                                'default' => 0, | ||
|  |      *                            ), | ||
|  |      *                            'name' => array( | ||
|  |      *                                'type' => 'text', | ||
|  |      *                                'length' => 12, | ||
|  |      *                            ), | ||
|  |      *                            'description' => array( | ||
|  |      *                                'type' => 'text', | ||
|  |      *                                'length' => 12, | ||
|  |      *                            ) | ||
|  |      *                       ); | ||
|  |      * @param array  $options An associative array of table options: | ||
|  |      *                        array( | ||
|  |      *                            'comment' => 'Foo', | ||
|  |      *                            'temporary' => true|false, | ||
|  |      *                        ); | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function createTable($name, $fields, $options = array()) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $query = $this->_getCreateTableQuery($name, $fields, $options); | ||
|  |         if (MDB2::isError($query)) { | ||
|  |             return $query; | ||
|  |         } | ||
|  | 
 | ||
|  |         $options_strings = array(); | ||
|  | 
 | ||
|  |         if (!empty($options['comment'])) { | ||
|  |             $options_strings['comment'] = '/* '.$db->quote($options['comment'], 'text'). ' */'; | ||
|  |         } | ||
|  | 
 | ||
|  |         if (!empty($options_strings)) { | ||
|  |             $query.= ' '.implode(' ', $options_strings); | ||
|  |         } | ||
|  |          | ||
|  |         $result = $db->exec($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $this->_silentCommit(); | ||
|  |         foreach ($fields as $field_name => $field) { | ||
|  |             if (!empty($field['autoincrement'])) { | ||
|  |                 //create PK constraint
 | ||
|  |                 $pk_definition = array( | ||
|  |                     'fields' => array($field_name => array()), | ||
|  |                     'primary' => true, | ||
|  |                 ); | ||
|  |                 //$pk_name = $name.'_PK';
 | ||
|  |                 $pk_name = null; | ||
|  |                 $result = $this->createConstraint($name, $pk_name, $pk_definition); | ||
|  |                 if (MDB2::isError($result)) { | ||
|  |                     return $result; | ||
|  |                 } | ||
|  |                 //create autoincrement sequence + trigger
 | ||
|  |                 return $this->_makeAutoincrement($field_name, $name, 1); | ||
|  |             } | ||
|  |         } | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ checkSupportedChanges()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * Check if planned changes are supported | ||
|  |      * | ||
|  |      * @param string $name name of the database that should be dropped | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function checkSupportedChanges(&$changes) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         foreach ($changes as $change_name => $change) { | ||
|  |             switch ($change_name) { | ||
|  |             case 'notnull': | ||
|  |                 return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, | ||
|  |                     'it is not supported changes to field not null constraint', __FUNCTION__); | ||
|  |             case 'default': | ||
|  |                 return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, | ||
|  |                     'it is not supported changes to field default value', __FUNCTION__); | ||
|  |             case 'length': | ||
|  |                 /* | ||
|  |                 return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, | ||
|  |                     'it is not supported changes to field default length', __FUNCTION__); | ||
|  |                 */ | ||
|  |             case 'unsigned': | ||
|  |             case 'type': | ||
|  |             case 'declaration': | ||
|  |             case 'definition': | ||
|  |                 break; | ||
|  |             default: | ||
|  |                 return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, | ||
|  |                     'it is not supported change of type' . $change_name, __FUNCTION__); | ||
|  |             } | ||
|  |         } | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ _getTemporaryTableQuery()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * A method to return the required SQL string that fits between CREATE ... TABLE | ||
|  |      * to create the table as a temporary table. | ||
|  |      * | ||
|  |      * @return string The string required to be placed between "CREATE" and "TABLE" | ||
|  |      *                to generate a temporary table, if possible. | ||
|  |      */ | ||
|  |     function _getTemporaryTableQuery() | ||
|  |     { | ||
|  |         return 'GLOBAL TEMPORARY'; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ _getAdvancedFKOptions()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * Return the FOREIGN KEY query section dealing with non-standard options | ||
|  |      * as MATCH, INITIALLY DEFERRED, ON UPDATE, ... | ||
|  |      * | ||
|  |      * @param array $definition | ||
|  |      * | ||
|  |      * @return string | ||
|  |      * @access protected | ||
|  |      */ | ||
|  |     function _getAdvancedFKOptions($definition) | ||
|  |     { | ||
|  |         $query = ''; | ||
|  |         if (!empty($definition['onupdate'])) { | ||
|  |             $query .= ' ON UPDATE '.$definition['onupdate']; | ||
|  |         } | ||
|  |         if (!empty($definition['ondelete'])) { | ||
|  |             $query .= ' ON DELETE '.$definition['ondelete']; | ||
|  |         } | ||
|  |         return $query; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ dropTable()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * drop an existing table | ||
|  |      * | ||
|  |      * @param string $name name of the table that should be dropped | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function dropTable($name) | ||
|  |     { | ||
|  |         $result = $this->_dropAutoincrement($name); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $result = parent::dropTable($name); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $this->_silentCommit(); | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ vacuum()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * Optimize (vacuum) all the tables in the db (or only the specified table) | ||
|  |      * and optionally run ANALYZE. | ||
|  |      * | ||
|  |      * @param string $table table name (all the tables if empty) | ||
|  |      * @param array  $options an array with driver-specific options: | ||
|  |      *               - timeout [int] (in seconds) [mssql-only] | ||
|  |      *               - analyze [boolean] [pgsql and mysql] | ||
|  |      *               - full [boolean] [pgsql-only] | ||
|  |      *               - freeze [boolean] [pgsql-only] | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function vacuum($table = null, $options = array()) | ||
|  |     { | ||
|  |         // not needed in Interbase/Firebird
 | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ alterTable()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * alter an existing table | ||
|  |      * | ||
|  |      * @param string  $name    name of the table that is intended to be changed. | ||
|  |      * @param array   $changes associative array that contains the details of each type | ||
|  |      *                         of change that is intended to be performed. The types of | ||
|  |      *                         changes that are currently supported are defined as follows: | ||
|  |      * | ||
|  |      *                         name | ||
|  |      * | ||
|  |      *                             New name for the table. | ||
|  |      * | ||
|  |      *                         add | ||
|  |      * | ||
|  |      *                             Associative array with the names of fields to be added as | ||
|  |      *                             indexes of the array. The value of each entry of the array | ||
|  |      *                             should be set to another associative array with the properties | ||
|  |      *                             of the fields to be added. The properties of the fields should | ||
|  |      *                             be the same as defined by the MDB2 parser. | ||
|  |      * | ||
|  |      * | ||
|  |      *                         remove | ||
|  |      * | ||
|  |      *                             Associative array with the names of fields to be removed as indexes | ||
|  |      *                             of the array. Currently the values assigned to each entry are ignored. | ||
|  |      *                             An empty array should be used for future compatibility. | ||
|  |      * | ||
|  |      *                         rename | ||
|  |      * | ||
|  |      *                             Associative array with the names of fields to be renamed as indexes | ||
|  |      *                             of the array. The value of each entry of the array should be set to | ||
|  |      *                             another associative array with the entry named name with the new | ||
|  |      *                             field name and the entry named Declaration that is expected to contain | ||
|  |      *                             the portion of the field declaration already in DBMS specific SQL code | ||
|  |      *                             as it is used in the CREATE TABLE statement. | ||
|  |      * | ||
|  |      *                         change | ||
|  |      * | ||
|  |      *                             Associative array with the names of the fields to be changed as indexes | ||
|  |      *                             of the array. Keep in mind that if it is intended to change either the | ||
|  |      *                             name of a field and any other properties, the change array entries | ||
|  |      *                             should have the new names of the fields as array indexes. | ||
|  |      * | ||
|  |      *                             The value of each entry of the array should be set to another associative | ||
|  |      *                             array with the properties of the fields to that are meant to be changed as | ||
|  |      *                             array entries. These entries should be assigned to the new values of the | ||
|  |      *                             respective properties. The properties of the fields should be the same | ||
|  |      *                             as defined by the MDB2 parser. | ||
|  |      * | ||
|  |      *                             Example | ||
|  |      *                                array( | ||
|  |      *                                    'name' => 'userlist', | ||
|  |      *                                    'add' => array( | ||
|  |      *                                        'quota' => array( | ||
|  |      *                                            'type' => 'integer', | ||
|  |      *                                            'unsigned' => 1 | ||
|  |      *                                        ) | ||
|  |      *                                    ), | ||
|  |      *                                    'remove' => array( | ||
|  |      *                                        'file_limit' => array(), | ||
|  |      *                                        'time_limit' => array() | ||
|  |      *                                    ), | ||
|  |      *                                    'change' => array( | ||
|  |      *                                        'name' => array( | ||
|  |      *                                            'length' => '20', | ||
|  |      *                                            'definition' => array( | ||
|  |      *                                                'type' => 'text', | ||
|  |      *                                                'length' => 20, | ||
|  |      *                                            ), | ||
|  |      *                                        ) | ||
|  |      *                                    ), | ||
|  |      *                                    'rename' => array( | ||
|  |      *                                        'sex' => array( | ||
|  |      *                                            'name' => 'gender', | ||
|  |      *                                            'definition' => array( | ||
|  |      *                                                'type' => 'text', | ||
|  |      *                                                'length' => 1, | ||
|  |      *                                                'default' => 'M', | ||
|  |      *                                            ), | ||
|  |      *                                        ) | ||
|  |      *                                    ) | ||
|  |      *                                ) | ||
|  |      * | ||
|  |      * @param boolean $check   indicates whether the function should just check if the DBMS driver | ||
|  |      *                         can perform the requested table alterations if the value is true or | ||
|  |      *                         actually perform them otherwise. | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function alterTable($name, $changes, $check) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         foreach ($changes as $change_name => $change) { | ||
|  |             switch ($change_name) { | ||
|  |             case 'add': | ||
|  |             case 'remove': | ||
|  |             case 'rename': | ||
|  |                 break; | ||
|  |             case 'change': | ||
|  |                 foreach ($changes['change'] as $field) { | ||
|  |                     if (MDB2::isError($err = $this->checkSupportedChanges($field))) { | ||
|  |                         return $err; | ||
|  |                     } | ||
|  |                 } | ||
|  |                 break; | ||
|  |             default: | ||
|  |                 return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null, | ||
|  |                     'change type "' . $change_name . '" not yet supported', __FUNCTION__); | ||
|  |             } | ||
|  |         } | ||
|  |         if ($check) { | ||
|  |             return MDB2_OK; | ||
|  |         } | ||
|  |         $query = ''; | ||
|  |         if (!empty($changes['add']) && is_array($changes['add'])) { | ||
|  |             foreach ($changes['add'] as $field_name => $field) { | ||
|  |                 if ($query) { | ||
|  |                     $query.= ', '; | ||
|  |                 } | ||
|  |                 $query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field); | ||
|  |             } | ||
|  |         } | ||
|  | 
 | ||
|  |         if (!empty($changes['remove']) && is_array($changes['remove'])) { | ||
|  |             foreach ($changes['remove'] as $field_name => $field) { | ||
|  |                 if ($query) { | ||
|  |                     $query.= ', '; | ||
|  |                 } | ||
|  |                 $field_name = $db->quoteIdentifier($field_name, true); | ||
|  |                 $query.= 'DROP ' . $field_name; | ||
|  |             } | ||
|  |         } | ||
|  | 
 | ||
|  |         if (!empty($changes['rename']) && is_array($changes['rename'])) { | ||
|  |             foreach ($changes['rename'] as $field_name => $field) { | ||
|  |                 if ($query) { | ||
|  |                     $query.= ', '; | ||
|  |                 } | ||
|  |                 $field_name = $db->quoteIdentifier($field_name, true); | ||
|  |                 $query.= 'ALTER ' . $field_name . ' TO ' . $db->quoteIdentifier($field['name'], true); | ||
|  |             } | ||
|  |         } | ||
|  | 
 | ||
|  |         if (!empty($changes['change']) && is_array($changes['change'])) { | ||
|  |             // missing support to change DEFAULT and NULLability
 | ||
|  |             foreach ($changes['change'] as $field_name => $field) { | ||
|  |                 if (MDB2::isError($err = $this->checkSupportedChanges($field))) { | ||
|  |                     return $err; | ||
|  |                 } | ||
|  |                 if ($query) { | ||
|  |                     $query.= ', '; | ||
|  |                 } | ||
|  |                 $db->loadModule('Datatype', null, true); | ||
|  |                 $field_name = $db->quoteIdentifier($field_name, true); | ||
|  |                 $query.= 'ALTER ' . $field_name.' TYPE ' . $db->datatype->getTypeDeclaration($field['definition']); | ||
|  |             } | ||
|  |         } | ||
|  | 
 | ||
|  |         if (!strlen($query)) { | ||
|  |             return MDB2_OK; | ||
|  |         } | ||
|  | 
 | ||
|  |         $name = $db->quoteIdentifier($name, true); | ||
|  |         $result = $db->exec("ALTER TABLE $name $query"); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $this->_silentCommit(); | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listTables()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all tables in the current database | ||
|  |      * | ||
|  |      * @return mixed array of table names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listTables() | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $query = 'SELECT RDB$RELATION_NAME | ||
|  |                     FROM RDB$RELATIONS | ||
|  |                    WHERE (RDB$SYSTEM_FLAG=0 OR RDB$SYSTEM_FLAG IS NULL) | ||
|  |                      AND RDB$VIEW_BLR IS NULL | ||
|  |                 ORDER BY RDB$RELATION_NAME'; | ||
|  |         $result = $db->queryCol($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listTableFields()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all fields in a table in the current database | ||
|  |      * | ||
|  |      * @param string $table name of table that should be used in method | ||
|  |      * | ||
|  |      * @return mixed array of field names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listTableFields($table) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $table = $db->quote(strtoupper($table), 'text'); | ||
|  |         $query = "SELECT RDB\$FIELD_NAME
 | ||
|  |                     FROM RDB\$RELATION_FIELDS | ||
|  |                    WHERE UPPER(RDB\$RELATION_NAME)=$table | ||
|  |                      AND (RDB\$SYSTEM_FLAG=0 OR RDB\$SYSTEM_FLAG IS NULL)";
 | ||
|  |         $result = $db->queryCol($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listUsers()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all users | ||
|  |      * | ||
|  |      * @return mixed array of user names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listUsers() | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         return $db->queryCol('SELECT DISTINCT RDB$USER FROM RDB$USER_PRIVILEGES'); | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listViews()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all views in the current database | ||
|  |      * | ||
|  |      * @return mixed array of view names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listViews() | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $result = $db->queryCol('SELECT DISTINCT RDB$VIEW_NAME FROM RDB$VIEW_RELATIONS'); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listTableViews()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list the views in the database that reference a given table | ||
|  |      * | ||
|  |      * @param string table for which all referenced views should be found | ||
|  |      * | ||
|  |      * @return mixed array of view names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listTableViews($table) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $query = 'SELECT DISTINCT RDB$VIEW_NAME FROM RDB$VIEW_RELATIONS'; | ||
|  |         $table = $db->quote(strtoupper($table), 'text'); | ||
|  |         $query .= " WHERE UPPER(RDB\$RELATION_NAME)=$table"; | ||
|  |         $result = $db->queryCol($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listFunctions()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all functions (and stored procedures) in the current database | ||
|  |      * | ||
|  |      * @return mixed array of function names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listFunctions() | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $query = 'SELECT RDB$FUNCTION_NAME FROM RDB$FUNCTIONS WHERE (RDB$SYSTEM_FLAG IS NULL OR RDB$SYSTEM_FLAG = 0) | ||
|  |                   UNION | ||
|  |                   SELECT RDB$PROCEDURE_NAME FROM RDB$PROCEDURES'; | ||
|  |         $result = $db->queryCol($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listTableTriggers()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all triggers in the database that reference a given table | ||
|  |      * | ||
|  |      * @param string table for which all referenced triggers should be found | ||
|  |      * | ||
|  |      * @return mixed array of trigger names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listTableTriggers($table = null) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $query = 'SELECT RDB$TRIGGER_NAME | ||
|  |                     FROM RDB$TRIGGERS | ||
|  |                    WHERE (RDB$SYSTEM_FLAG IS NULL | ||
|  |                       OR RDB$SYSTEM_FLAG = 0)'; | ||
|  |         if (null !== $table) { | ||
|  |             $table = $db->quote(strtoupper($table), 'text'); | ||
|  |             $query .= " AND UPPER(RDB\$RELATION_NAME)=$table"; | ||
|  |         } | ||
|  |         $result = $db->queryCol($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ createIndex()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * Get the stucture of a field into an array | ||
|  |      * | ||
|  |      * @param string $table      name of the table on which the index is to be created | ||
|  |      * @param string $name       name of the index to be created | ||
|  |      * @param array  $definition associative array that defines properties of the index to be created. | ||
|  |      *                           Currently, only one property named FIELDS is supported. This property | ||
|  |      *                           is also an associative with the names of the index fields as array | ||
|  |      *                           indexes. Each entry of this array is set to another type of associative | ||
|  |      *                           array that specifies properties of the index that are specific to | ||
|  |      *                           each field. | ||
|  |      * | ||
|  |      *                           Currently, only the sorting property is supported. It should be used | ||
|  |      *                           to define the sorting direction of the index. It may be set to either | ||
|  |      *                           ascending or descending. | ||
|  |      * | ||
|  |      *                           Not all DBMS support index sorting direction configuration. The DBMS | ||
|  |      *                           drivers of those that do not support it ignore this property. Use the | ||
|  |      *                           function support() to determine whether the DBMS driver can manage indexes. | ||
|  | 
 | ||
|  |      *                           Example | ||
|  |      *                           array( | ||
|  |      *                               'fields' => array( | ||
|  |      *                                   'user_name' => array( | ||
|  |      *                                       'sorting' => 'ascending' | ||
|  |      *                                    ), | ||
|  |      *                                    'last_login' => array() | ||
|  |      *                                ) | ||
|  |      *                            ) | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function createIndex($table, $name, $definition) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $query = 'CREATE'; | ||
|  | 
 | ||
|  |         $query_sort = ''; | ||
|  |         foreach ($definition['fields'] as $field) { | ||
|  |             if (!strcmp($query_sort, '') && isset($field['sorting'])) { | ||
|  |                 switch ($field['sorting']) { | ||
|  |                 case 'ascending': | ||
|  |                     $query_sort = ' ASC'; | ||
|  |                     break; | ||
|  |                 case 'descending': | ||
|  |                     $query_sort = ' DESC'; | ||
|  |                     break; | ||
|  |                 } | ||
|  |             } | ||
|  |         } | ||
|  |         $table = $db->quoteIdentifier($table, true); | ||
|  |         $name  = $db->quoteIdentifier($db->getIndexName($name), true); | ||
|  |         $query .= $query_sort. " INDEX $name ON $table"; | ||
|  |         $fields = array(); | ||
|  |         foreach (array_keys($definition['fields']) as $field) { | ||
|  |             $fields[] = $db->quoteIdentifier($field, true); | ||
|  |         } | ||
|  |         $query .= ' ('.implode(', ', $fields) . ')'; | ||
|  |         $result = $db->exec($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $this->_silentCommit(); | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listTableIndexes()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all indexes in a table | ||
|  |      * | ||
|  |      * @param string $table name of table that should be used in method | ||
|  |      * | ||
|  |      * @return mixed array of index names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listTableIndexes($table) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $table = $db->quote(strtoupper($table), 'text'); | ||
|  |         $query = "SELECT RDB\$INDEX_NAME
 | ||
|  |                     FROM RDB\$INDICES | ||
|  |                    WHERE UPPER(RDB\$RELATION_NAME)=$table | ||
|  |                      AND (RDB\$SYSTEM_FLAG IS NULL OR RDB\$SYSTEM_FLAG = 0) | ||
|  |                      AND (RDB\$UNIQUE_FLAG IS NULL OR RDB\$UNIQUE_FLAG = 0) | ||
|  |                      AND RDB\$FOREIGN_KEY IS NULL";
 | ||
|  |         $indexes = $db->queryCol($query, 'text'); | ||
|  |         if (MDB2::isError($indexes)) { | ||
|  |             return $indexes; | ||
|  |         } | ||
|  | 
 | ||
|  |         $result = array(); | ||
|  |         foreach ($indexes as $index) { | ||
|  |             $index = $this->_fixIndexName($index); | ||
|  |             if (!empty($index)) { | ||
|  |                 $result[$index] = true; | ||
|  |             } | ||
|  |         } | ||
|  | 
 | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_change_key_case($result, $db->options['field_case']); | ||
|  |         } | ||
|  |         return array_keys($result); | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ createConstraint()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * create a constraint on a table | ||
|  |      * | ||
|  |      * @param string $table      name of the table on which the constraint is to be created | ||
|  |      * @param string $name       name of the constraint to be created | ||
|  |      * @param array  $definition associative array that defines properties of the constraint to be created. | ||
|  |      *                           Currently, only one property named FIELDS is supported. This property | ||
|  |      *                           is also an associative with the names of the constraint fields as array | ||
|  |      *                           constraints. Each entry of this array is set to another type of associative | ||
|  |      *                           array that specifies properties of the constraint that are specific to | ||
|  |      *                           each field. | ||
|  |      * | ||
|  |      *                           Example | ||
|  |      *                               array( | ||
|  |      *                                   'fields' => array( | ||
|  |      *                                       'user_name' => array(), | ||
|  |      *                                       'last_login' => array(), | ||
|  |      *                                   ) | ||
|  |      *                               ) | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function createConstraint($table, $name, $definition) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $table = $db->quoteIdentifier($table, true); | ||
|  |         if (!empty($name)) { | ||
|  |             $name = $db->quoteIdentifier($db->getIndexName($name), true); | ||
|  |         } | ||
|  |         $query = "ALTER TABLE $table ADD"; | ||
|  |         if (!empty($definition['primary'])) { | ||
|  |             if (!empty($name)) { | ||
|  |                 $query.= ' CONSTRAINT '.$name; | ||
|  |             } | ||
|  |             $query.= ' PRIMARY KEY'; | ||
|  |         } else { | ||
|  |             $query.= ' CONSTRAINT '. $name; | ||
|  |             if (!empty($definition['unique'])) { | ||
|  |                $query.= ' UNIQUE'; | ||
|  |             } elseif (!empty($definition['foreign'])) { | ||
|  |                 $query.= ' FOREIGN KEY'; | ||
|  |             } | ||
|  |         } | ||
|  |         $fields = array(); | ||
|  |         foreach (array_keys($definition['fields']) as $field) { | ||
|  |             $fields[] = $db->quoteIdentifier($field, true); | ||
|  |         } | ||
|  |         $query .= ' ('. implode(', ', $fields) . ')'; | ||
|  |         if (!empty($definition['foreign'])) { | ||
|  |             $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true); | ||
|  |             $referenced_fields = array(); | ||
|  |             foreach (array_keys($definition['references']['fields']) as $field) { | ||
|  |                 $referenced_fields[] = $db->quoteIdentifier($field, true); | ||
|  |             } | ||
|  |             $query .= ' ('. implode(', ', $referenced_fields) . ')'; | ||
|  |             $query .= $this->_getAdvancedFKOptions($definition); | ||
|  |         } | ||
|  |         $result = $db->exec($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         $this->_silentCommit(); | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listTableConstraints()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all constraints in a table | ||
|  |      * | ||
|  |      * @param string $table name of table that should be used in method | ||
|  |      * | ||
|  |      * @return mixed array of constraint names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listTableConstraints($table) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  |         $table = $db->quote(strtoupper($table), 'text'); | ||
|  |         $query = "SELECT RDB\$INDEX_NAME
 | ||
|  |                     FROM RDB\$INDICES | ||
|  |                    WHERE UPPER(RDB\$RELATION_NAME)=$table | ||
|  |                      AND ( | ||
|  |                            (RDB\$UNIQUE_FLAG IS NOT NULL AND RDB\$UNIQUE_FLAG <> 0) | ||
|  |                         OR RDB\$FOREIGN_KEY IS NOT NULL | ||
|  |                      )";
 | ||
|  |         $constraints = $db->queryCol($query); | ||
|  |         if (MDB2::isError($constraints)) { | ||
|  |             return $constraints; | ||
|  |         } | ||
|  | 
 | ||
|  |         $result = array(); | ||
|  |         foreach ($constraints as $constraint) { | ||
|  |             $constraint = $this->_fixIndexName($constraint); | ||
|  |             if (!empty($constraint)) { | ||
|  |                 $result[$constraint] = true; | ||
|  |             } | ||
|  |         } | ||
|  | 
 | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_change_key_case($result, $db->options['field_case']); | ||
|  |         } | ||
|  |         return array_keys($result); | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ createSequence()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * create sequence | ||
|  |      * | ||
|  |      * @param string $seq_name name of the sequence to be created | ||
|  |      * @param string $start start value of the sequence; default is 1 | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function createSequence($seq_name, $start = 1) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $sequence_name = $db->getSequenceName($seq_name); | ||
|  |         if (MDB2::isError($result = $db->exec('CREATE GENERATOR '.$sequence_name))) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         if (MDB2::isError($result = $db->exec('SET GENERATOR '.$sequence_name.' TO '.($start-1)))) { | ||
|  |             if (MDB2::isError($err = $db->dropSequence($seq_name))) { | ||
|  |                 return $db->raiseError($result, null, null, | ||
|  |                     'Could not setup sequence start value and then it was not possible to drop it', __FUNCTION__); | ||
|  |             } | ||
|  |         } | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ dropSequence()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * drop existing sequence | ||
|  |      * | ||
|  |      * @param string $seq_name name of the sequence to be dropped | ||
|  |      * | ||
|  |      * @return mixed MDB2_OK on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function dropSequence($seq_name) | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $sequence_name = $db->getSequenceName($seq_name); | ||
|  |         $sequence_name = $db->quote($sequence_name, 'text'); | ||
|  |         $query = "DELETE FROM RDB\$GENERATORS WHERE UPPER(RDB\$GENERATOR_NAME)=$sequence_name"; | ||
|  |         $result = $db->exec($query); | ||
|  |         if (MDB2::isError($result)) { | ||
|  |             return $result; | ||
|  |         } | ||
|  |         return MDB2_OK; | ||
|  |     } | ||
|  | 
 | ||
|  |     // }}}
 | ||
|  |     // {{{ listSequences()
 | ||
|  | 
 | ||
|  |     /** | ||
|  |      * list all sequences in the current database | ||
|  |      * | ||
|  |      * @return mixed array of sequence names on success, a MDB2 error on failure | ||
|  |      * @access public | ||
|  |      */ | ||
|  |     function listSequences() | ||
|  |     { | ||
|  |         $db = $this->getDBInstance(); | ||
|  |         if (MDB2::isError($db)) { | ||
|  |             return $db; | ||
|  |         } | ||
|  | 
 | ||
|  |         $query = 'SELECT RDB$GENERATOR_NAME FROM RDB$GENERATORS WHERE (RDB$SYSTEM_FLAG IS NULL OR RDB$SYSTEM_FLAG = 0)'; | ||
|  |         $table_names = $db->queryCol($query); | ||
|  |         if (MDB2::isError($table_names)) { | ||
|  |             return $table_names; | ||
|  |         } | ||
|  |         $result = array(); | ||
|  |         foreach ($table_names as $table_name) { | ||
|  |             $result[] = $this->_fixSequenceName($table_name); | ||
|  |         } | ||
|  |         if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | ||
|  |             $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result); | ||
|  |         } | ||
|  |         return $result; | ||
|  |     } | ||
|  | } | ||
|  | ?>
 |